Past research suggests that it is common for teachers to draw on multiple instructional materials even when their school or district recommends, requires, or provides them with a specific curriculum. While teachers likely draw on a variety of resources to address changing and diverse student needs, studies show that teacher-selected materials can…

Data shows that kids are months or even years behind where they would be in a typical year. And a deepening educational divide between majority white schools and majority black schools, between wealthier school districts and higher poverty districts. The results of this year's statewide exams made abundantly clear what other data is showing as…